Abstract
In this paper, a new hybrid pulse position modulation - binary phase shift keying subcarrier intensity modulation (PPM-BPSK-SIM) modulation scheme for free space optical (FSO) communications is presented. The theoretical analysis error probability of the PPM-BPSK-SIM in turbulence atmospheric channel is carried out and verified using computer simulation. The performance of PPM-BPSK-SIM is compared with PPM and BPSK-SIM in a lognormal atmospheric channel for a range of turbulence variance σ2l = {0, 0.1, 0.3, 0.5 and 1.2}. The results show that the performance of PPM-BPSK-SIM is superior to BPSK-SIM for all turbulence levels, while its performance becomes better than 2-PPM for σ2l >; 0.3.
| Original language | English |
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| Title of host publication | 16th European Conference on Networks and Optical Communications : NOC 2011, 20th -22nd July 2011, Newcastle-upon-Tyne, UK |
| Editors | Zabih Ghassemlooy, Wai Ng, Sujan Rajbhandari |
| Place of Publication | Piscataway, NJ |
| Publisher | IEEE |
| Pages | 36-39 |
| ISBN (Print) | 978-1612847535 |
| Publication status | Published - 2011 |